This happens via VapourSynth's message logger.
Also add wrapper functions for this to aegisub_vs.py and add progress
updates everywhere - both to improve UX and to help with debugging for
when scripts get stuck somewhere.
On Windows, Python changes the application's locale upon being called,
which will break wxwidgets, causing various assertion error dialogs or
even crashes (for example when interacting with any sort of float edit
control). Saving the locale and restoring it afterwards seems to be
the only really possible way to remedy this.
This default script will be executed to load any file whose file name
extension is not .py or .vpy .
The gui code for setting the default script is still a bit wonky as it
doesn't fit the rest of the preferences pages nicely, but it works for
now.
arch1t3cht